CVE-2018-17281 Information

Description

There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0 14.7.x through 14.7.7 and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://downloads.asterisk.org/pub/security/AST-2018-009.html http://packetstormsecurity.com/files/149453/Asterisk-Project-Security-Advisory-AST-2018-009.html http://seclists.org/fulldisclosure/2018/Sep/31 http://www.securityfocus.com/bid/105389 http://www.securitytracker.com/id/1041694 https://issues.asterisk.org/jira/browse/ASTERISK-28013 https://lists.debian.org/debian-lts-announce/2018/09/msg00034.html https://seclists.org/bugtraq/2018/Sep/53 https://security.gentoo.org/glsa/201811-11 https://www.debian.org/security/2018/dsa-4320

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5